\usepackage{sjtuvi}
\usepackage{sjtucover}
\logo{\resizebox{1cm}{!}{\includegraphics{vi/sjtug.pdf}}}
\titlegraphic{\includegraphics{sjtuphoto}}
\definecolor{cprimary}{RGB}{225,111,11}
\definelogo{sjtugtext}{vi/sjtugtext.pdf}{0}{0}
\setbeamertemplate{background}{
    \bgcenterbox{
        \sjtugtext[cprimary,opacity=0.15]
    }
}
\setbeamertemplate{title page}[maxplus]
\setbeamertemplate{bottom page}[min]
\setbeamertemplate{sectioning pages}[min]